This example displays a 3D multi-series bar chart of car manufacturer sales data for the first six months of a year. The visualization renders groups of colored bars in a three-dimensional space, allowing comparison of monthly values across manufacturers. The code uses the d3-x3d library, which bridges D3.js with X3DOM for WebGL-based 3D rendering, alongside d3-3d for 3D scene construction. Data is loaded from a CSV file using `d3.csv`, parsed into key-value pairs per manufacturer, and then passed to the `d3.x3d.chart.barChartMultiSeries` component for display.